Fig. 1

Adjacency graph of two genomes. Given \(G_1=\{g_1,g_2,g_3,g_4,g_5 \}\) and \(G_2=\{g_3,-g_2,-g_1,-g_4,g_5 \}\). The number of paths is 2, the number of cycles is 1, and the length of the genome is 5. By Eq (1), the DCJ distance between \(G_1\) and \(G_2\) is \(n-(C+I/2) =3\)